Sectional bookcase.



No. 835,507. l PATBNTED NOV. 13, 1906. 1L. FAUST & W. A. BROLIN.

SEGTIONAL BooKGAsE.

APPLICATION FILED .TAN. 30, 1906.

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TH s Name No. 835,507. PATENTED Nov. 13, 1906. L. MUST @L W. A. BROLIN.

SBGTIONAL BooKCAsE.

APPLICATION FILED `.TAN.30. 1906.

4:' 2 SHEETS-SHEET 24 f? jfl; i fig? wwm By @bmw LEVIN FAUST AND WILLARD A.` BROLIN, OF ROCKFORD, ILLINOIS.

SECTIONAL BOOKCASE.

Specification of Letters Patent.

Patented Nov. 13, 1906.

Application filed January 30, 1906. Serial No. 298.694.

To all whom, t may concern:

Be it known that we, LEvIN FAUsT and WILLARD A. BROLIN, citizens of the United States of America, residing at Rockford, in

. the county of Winnebago and State of Illinois, have invented certain new and useful Improvements in Sectional Bookcases, of which the following is a specification.

.Our invention relates specifically to mechanism for equalizing the travel ,of the opposite ends of bookcase doors or closuresand bureau and other sliding drawers and similar slidable parts of furniture; and it consists,

essentially, of a case or similar structure having guideways therein extending transversely thereto and substantially parallel to each other from its opening to the rear portion thereof and thence curving inward at substantially right angles and lapping by and diverging from each other, a sprocket-pinion rotatably mounted between and projecting peripherally into the diverging portions of the guideways, a closure for the opening in the structure, and sprocket-tapes engaging, substantially, opposite sprockets on the pinion and extending therefrom lengthwise through the guideways to and connecting with the ends of the closure of the structure.

Referring to the accompanying drawings, which form a part of this specification, Figure l is a sectional bookcase embodying our invention with the top thereof removed therefrom and some parts broken away to show the interior construction, arrangement, and operation of the movable parts of the same. Fig. 2 is a like view of the same with parts thereof in different positions from those shown in Fig. l, which latter iigure shows the closure of the bookcase open and slid inward to its backward limit of travel, while Fig. 2 shows the closure slid outward to its forward limit of travel and ready to be swung vertically downward to a closed position. Fig. 3 is an enlarged sectional detail of the end ortions of a single section of a bookcase, s owing a preferred means for slidably connecting the closure therewith and also for pivotally connecting such closure with its equalizing mechanism. Fig. 4 is a section at the dotted line 4 4 in Fig. 3 of parts there shown, including a fragment of the top of such section. Fig. 5 is a partial section at the dotted line 4 4 in Fig. 3 of parts there shown, with another part thereof broken away. Fig. 52 is a section at the dotted line 5a 52L in Fig. 5 of parts there shown, Fig. 6 is an enlarged section at the dotted line 6 6 in Fig. 2 of parts there shown. Fig. 7 is an enlarged section at the dotted line 7 7 in Fig. 2 of parts there shown. Fig. 8 is an enlarged sectional detail of one of the sprocket-tapes of the bookcase.

Like letters of reference indicate corresponding parts throughout the several views.

A is a rectangular section of a sectional bookcase of the usual or any desired construction, having guideways A A2 therein, extending transversely thereto and substantially parallel to each other from its front or opening to the rear portion thereof and thence curving inward at substantially right angles and lapping by and diverging from each other. j

B is a sprocket-pinion rotatably mounted on a pintle B ,between and projecting peripherally into the diverging portions of the guideways A A2'.

C is the top of the 'section A and may also constitute the bottom of a section (not shown) resting thereon.

C is a partition arranged horizontally below and parallel to the section-top C and a suflicient distance therefrom to form a recess C2 to admit a closure of the section A.

D represents disks slotted radially at D to form stops D2 for parts to be described hereinafter and are preferably countersunk into the body of the case, so that such slots D therein will register longitudinally with parallel grooves D3 in the case, Fig. 5.

E is a closure for the opening in the front of the section A and is slidably mounted in the recess C2 therein.

F F are sprocket-tapes (formed, preferably, of thin strips of iiexible steel perforated transversely and at regular intervals to form openings F2 therethrough to engage the sprockets F3 on the pinion B) extending lengthwise through the guideways A A2 and pivot-jointed, by means of pintles F4 F5, to the ends of the closure C3, such pintles F4 F5 projecting into engagement with the grooves D3 in the section A and serving as slidable bearings for the closure C3. The sprockettapes F F being formed of inelastic and longitudinally-unyielding material and each engaging with the pinion B will obviously serve to positively and accurately equalize the slidable travel of a bookcase-closure, a bureau or other drawer, or any similar sliding part in furniture or elsewhere.

I-Iaving fully described our invention, what TOO we claim as new, and desire to secure by Letters Patent, is-

l. In combination, a case-section or similar structure having guideways therein eX- tending transversely thereto and substantially parallel to each other from the front to the rear portion thereof and thence curving inward at substantially right angles and lapping by and diverging from each other, a sprocket-pinion rotatably mounted between and projecting peripherally into the diverging portions of the guidew'ays, a closure for the opening in the structure and sprockettapes engaging substantially opposite sprockets on the pinionv and extending therefrom lengthwise through the guideways to and connecting with the ends of the closure of the structure.

2. In combination, a ease-section A having guid'eways A A2 therein extending transversely thereto and substantially parallel to each other from the opening in the front thereof to its rear portion 'and thence curving inward at substantially right angles and lapping by and diverging from each other, a sprocket-pinion B rotatably mounted between and projecting peripherally into the, diverging portions of the guideways A A2, a

closure E for the opening in the oase-section and sprocket-tapes F F engaging substantially opposite sprockets on the pinion B and vextending therefrom lengthwise through the guideways A A2 to and connecting with the ends 'of the closure E of the case-section A.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

LEVIN FAUST. WILLARD A. BROLIN. litnesses L. L. MORRISON, NELLIE E. ENNETT. 

